Unable to update default and mention attributes of already written string

[rahulVermaSimpplr]

I am facing an issue where I am unable to update the default and mention attributes of an already written string in the text view. Here is my use case:

I have a text view and there is some text in it including mentions and other text with default and mention attributes applied to it. The mention attributes are used to highlight usernames in the text. I am able to display this attributed string in a text view.

Now, I want to update the attributes of both mention and default on theme change, calling mentionListener.updateAttributes, updates the attributes for the text I entered after theme change, but I don't find any way to update the attributes of already written string.